Pump.



No. 679,892. Patented Aug. 6, I901. L. E. GENERELLY.

P U I P.

{Application filed Apr. 26, 1901.)

H (No Model.)

m: uoims Pncns c0. PNOTO-LITMQ, WASNINGTON. n. c.

NITED STATES PATENT OFF CE.

LAURENT E. GENERELLY, OF NEW ORLEANS, LOUISIANA.

PUMP.

SPECIFICATION forming part of Letters Patent N 0. 679,892, dated August 6, 1901.

Application filed April 26, 1901.

To all whom it may concern:

Beit known that I,LAURENTE.GENERELLY, a citizen of the United States, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented new and useful Improvements inPumps, of which the following is a specification.

My invention relates to improvements in pumps, and has for its general object to provide a pump embodying such a construction that in practice the plunger is buoyed up by the water or other liquid being pumped, and consequently the operator is enabled to lift same with but a minimum amount of elfort. A water seal is maintained between the atmosphere and the suction-chamber to prevent air from gaining access to the latter and insure the raising of a solid body of water incident to each stroke of the plunger, and a body of water is retained in the plunger and on the valve thereof subsequent to an operation of the pump, with the result that the pump is always primed and water will flow as soon as the plunger is again actuated.

With the foregoing in mind the invention will be fully understood from the following description and claim when taken in connection With the accompanying drawing, in which the figure is a vertical section of a pump constructed in accordance with my invention. v I Referring by letter to the said drawing, A is the case of myimproved pump. This case in the preferred embodiment of the inven tion comprises a cylinder a, of metal or other suitable material; a cap 19, connected to the upper end of the cylinder and having a central aperture 1); a flanged collar 0, screwed on the lower end of the cylinder, and a head (1, connected to the collar cand having a central opening e, containing a spider f, and also having an interiorly-threaded collarfiange g, surrounding said opening 6 and adapted for the connection of a pipe B, leading from a suitable source of supply. To the spider f is connected the headed guide-rod h of a downwardly-seating check-valve C, which has for its purpose to prevent the water or other liquid from returning to the pipe B after it has been drawn from said pipe into the suction-chamber D of the pump.

E is a discharge-spout which communicates Serial No. 57,579. (No model.)

with the interior of the case A, adjacent to the upper end thereof, and extends laterally from said case, and F is a reciprocatory plunger. The said plunger is provided at its lower end with a head i, surrounded by metallic rings j, which bear against the inner side of the case-cylinder a and serve to guide the plunger in its movements, and in addition to said head it comprises an annular hollow portion is, which is disposed above and connected to the head and is of about the proportional height illustrated. In the preferred embodiment of the invention the hollow portion is is made up of an outer circular Wall 1, connected at its lower end to a flange m, rising from the head 6, an inner circular Wall n, and annular end walls 19 inter-posed between and connected to the outer and inner circular walls, and consequently it has an air-tight chamber q and a passage r, surrounded by said chamber and open at its opposite ends for the entry and exit of Water. The hollow portion In of the plunger is of a less diameter than the case-cylinder a, and consequently it will be seen that a space sis afforded between the hollow-plunger portion and the case, said space being open at its upper end to receive water for a purpose presently pointed out. w

In the horizontally-disposed portion t of the I plunger-head 11 is an opening a, above which is disposed a downwardly-seating check-valve G. This valve has a stem v, guided in a socket w of a cross-bar 0:, connected to the flange m of the head, and to the said crossbar is pivotally or otherwise suitably connected the rod H, through the medium of which the plunger is actuated.

In the practical operation of my improved pump when the plunger is raised water'or other liquid is drawn from the supply-pipe B into the chamber D, and on the subsequent downstroke of the plunger the valve Gis seated and the valve G raised, with the result that the water or other liquid passes up through the passage r of the plunger and a portion of the same enters and occupies the space 5 between the plunger and cylindercase, While the remainder passes out through the spout E. Then on each subsequent up and down stroke of the plunger water is raised and discharged through the spout E. It will also be seen that a solid body of water will be raised incident to each stroke of the plunger, this beingdue to the fact that the water in the space 8 forms a seal between the at- Inosphere and the chamber D and prevents air from gaining. access to said chamber. Moreover, the water inthe space 8 in conjunction wit-h that in the chamber D serves tobuoy up the hollow plunger and reduces the power necessary to operate the pump to a mini-mu n1, this because the air-chamberof the hollow plunger is of greater buoyancy than the same volume of water. Subsequent to an operation of the pump the central'pas- I sage r is occupied by water, which crowds the valve G down on its seat, and from this it follows that the pump is always primed and is adapted to discharge water, incident to the first stroke of the plunger.

Notwithstanding its material advantages, as pointed out in the foregoing, it will be appreciated that my improved pump is simple and inexpensive in construction and embodies no parts that are likely to get out of order after a short period of use.

I have entered into a detail description of the specific construction and relativearrangemen-t of the parts embraced in the present and preferred embodiment of my invention in order to impart a full, clear, and exact understanding of the same. I do not desire,

however, to be understood as confining my-' self to such specific construction and arrangement of parts, as such changes or lmodifications may be made in practice as fairly fall 3 5 ranged in said case, and comprising the head having an opening in its horizontal portion,

and a flange rising from said horizontal por-' tion, a cross-bar connected to said flange, a valve disposed above the opening in the head, and the annular air-tight portion disposed above the head and, made 11 of the outer circular wall connected to the ange of the head, the inner circular wall, and the end walls interposed between and connected to the outer and inner walls; said annular portion being of a less size than the interior of the case whereby a space is afforded between it and said case, and a'rod connected to the cross= bar of the head. y

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. 1

LAURENT GENERELLY. lVitnesses:

A. W. CARTIER, JN'o. S. REYNATID. 

